. Author manuscript; available in PMC: 2017 Apr 1.

Published in final edited form as: J Prosthodont Res. 2016 Jan 11;60(2):85–91. doi: 10.1016/j.jpor.2015.12.003

Table 4.

Internal consistency measured by Cronbach’s alpha and item-rest correlation in 403 subjects with OHIP5 data.

OHIP5 items	Cronbach’s alpha when item is deleted	Item-rest correlation
Difficulty chewing	0.68	0.76
Painful aching	0.69	0.73
Uncomfortable about appearance	0.70	0.71
Less flavor in food	0.70	0.70
Difficulty doing usual jobs	0.70	0.70